Identify elements of a dataframe satisfying a condition
Suppose I have the following dataframe:
df = pd.DataFrame({'A':[1,2,3,400], 'B':[100,2,3,4]})
And I want to find the locations (by index and column) of every element
larger than 50, i.e. a correct output would be:
[(3,'A'), (0,'B')]
What would be the most pythonic way of doing this?
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